Mechanical part machining fixing clamp adopting pre-deformation clamping

Abstract

The invention discloses a mechanical part machining fixing clamp adopting pre-deformation clamping, and belongs to the technical field of part machining. The mechanical part machining fixing clamp adopting pre-deformation clamping comprises a base used for machining, and the other ends of multiple second rods are rotationally connected with linkage mechanisms; the bottoms of the two sliding rods are rotationally connected with pressing mechanisms. Wherein the bottom of one clamp main body is fixedly connected with a driving mechanism, an opposite mechanism is connected between the two clamp main bodies, and a limiting mechanism is fixedly connected in the base. A bolt on a pressing mechanism drives a pressing rod to complete longitudinal pre-fixing, a driving mechanism rotates a handle to enable a screw to push a clamp body to move transversely, opposite mechanisms achieve bilateral synchronous clamping through transmission of a fluted disc and a rack, a movable column and a fixing block are matched to adapt to the contour of a workpiece in a self-adaptive mode, and machining stress is transversely compensated through a second spring; the telescopic rod is matched with the first spring to offset longitudinal deformation, and the limiting mechanism ensures linear motion of the clamp.

Description

Technical Field

[0001] The invention belongs to the technical field of parts processing, and in particular relates to a fixing fixture for machining mechanical parts using pre-deformation clamping. Background Art

[0002] In the field of mechanical parts processing, pre-deformation clamping technology, as an advanced process means to actively compensate for workpiece deformation, has been widely used to improve processing accuracy and stability; existing pre-deformation clamping fixtures mostly use a transverse clamping mechanism to apply a pre-tightening force to the workpiece, thereby pre-offsetting the elastic deformation caused by cutting force, thermal stress and other factors during the processing process, thereby ensuring the consistency of processing dimensions; however, with the continuous increase in the demand for precision processing, the existing technology has gradually exposed certain shortcomings.

[0003] The pre-deformation design of traditional fixtures mainly focuses on the control of the clamping force in the lateral direction (perpendicular to the processing direction), and realizes lateral deformation compensation by adjusting the displacement of the clamping jaws or the hydraulic pressure. However, it is found in actual applications that the workpiece is not only affected by lateral forces during the processing, but its longitudinal (along the processing feed direction) stiffness characteristics will also undergo dynamic changes due to factors such as the clamping layout and material uniformity, resulting in uncontrollable micro-deformation of the unconstrained longitudinal degrees of freedom. For example, during the milling process of slender shaft parts, due to intermittent cutting impact and fixed constraints at the clamping end, bending vibrations are easily generated in the longitudinal direction, and existing fixtures lack a coordinated compensation mechanism for such multi-directional deformations.

[0004] To this end, we propose a fixing fixture for machining mechanical parts using pre-deformation clamping. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the disadvantages of the prior art and provide a fixing fixture for machining mechanical parts using pre-deformation clamping.

[0006] The technical solution adopted to solve the above technical problems is: a fixing fixture for machining mechanical parts using pre-deformation clamping, comprising a base for machining, two fixture bodies for fixing workpieces are installed on the top of the base, multiple movable columns are slidably connected in the two fixture bodies, and the inner ends of the multiple movable columns are rotatably connected to fixed blocks, a pressing plate for placing the workpiece is slidably connected at the center of the top of the base, and a telescopic mechanism is connected between the pressing plate and the base;

[0007] The bottom of the pressure plate is rotatably connected to a plurality of rods 2, the other ends of the plurality of rods 2 are rotatably connected to a linkage mechanism, the tops of the two clamp bodies are slidably connected to two sliding rods, the bottoms of the two sliding rods are rotatably connected to a pressing mechanism;

[0008] A driving mechanism is fixedly connected to the bottom of one of the clamp bodies, a facing mechanism is connected between the two clamp bodies, and a limiting mechanism is fixedly connected inside the base.

[0009] Through the above technical solution, the function of the base is to place the workpiece to be processed, and the function of the clamp body is to fix the workpiece placed on the base. When the workpiece is placed on the pressure plate, the two clamp bodies clamp the workpiece inward at the same time. At the same time, the movable column cooperates with spring 2, and the fixed block on the movable column automatically rotates according to the shape of the workpiece, which can fix irregularly shaped workpieces, and through spring 2, the elastic deformation caused by various factors during the processing can be offset.

[0010] Furthermore, the telescopic mechanism includes a plurality of telescopic rods whose two ends are respectively fixedly connected to the base and the bottom of the pressure plate, a spring 1 is sleeved on the outside of the plurality of telescopic rods, and the two ends of the spring 1 are respectively fixedly connected to the two ends of the telescopic rod, and a spring 2 is connected between the plurality of movable columns and the clamp body, and the two ends of the spring 2 are respectively fixedly connected to the movable column and the clamp body.

[0011] Through the above technical scheme, the function of the telescopic mechanism is to telescope to offset the elastic deformation. The elastic deformation in the longitudinal direction is pre-deformed by cooperating with the telescopic rod, spring one and pressure rod. The elastic deformation in the lateral direction is pre-deformed by cooperating with the movable column and spring two. When the workpiece is placed between the two fixture bodies, the fixed block on the movable column will automatically rotate and deform according to the shape of the workpiece to adapt to the irregular shape of the workpiece.

[0012] Furthermore, the linkage mechanism includes a plurality of rods three which are rotatably connected to the other ends of the plurality of rods two, the other ends of the plurality of rods three are rotatably connected to rods four through rotating shafts, the other ends of the plurality of rods four are rotatably connected to plates two, the tops of the two clamp bodies are fixedly connected to support frames, the two plates two are slidably connected to the two support frames, the two plates two are fixedly connected to two cylinders two on one side facing inwards, the plurality of cylinders two are slidably connected to shafts two, the plurality of shafts two are divided into two groups, the inward ends of the two groups of shafts two are fixedly connected to the sliding rod, the two sliding rods are slidably connected to the two support frames, the outsides of the plurality of cylinders two are sleeved with springs three, the two ends of the springs three are fixedly connected to the cylinder two and shaft two, respectively, the top of the base is fixedly connected to a plurality of slide groove rods, and the rotating shaft connecting the rod three and the rod four is located in the slide groove rod.

[0013] Through the above technical scheme, the role of the linkage mechanism is to drive the sliding rod to move through mechanical linkage. When you want to perform pre-deformation operation on the workpiece in the longitudinal direction, first place the workpiece on the pressure plate, press the pressure plate downward, and the pressure plate moves downward, driving one end of rod two to move downward, and rod two as a whole deflects and tilts outward, driving rod three to deflect and tilt upward, driving rod four to deflect and tilt inward, driving plate two to move inward, driving cylinder two and shaft two to move inward, and driving the sliding rod inward through spring three, so that the sliding rod moves to the top of the workpiece, which is convenient for longitudinal positioning of the workpiece. When the workpiece needs to be taken out, pull the sliding rod to move in the direction of plate two, at this time, the spring three is being compressed, and then the workpiece is taken out. Under the elastic force of spring one, the pressure plate automatically resets and waits for the next operation. It is convenient, fast, simple and practical, and rods three and four are limited and guided by the slide rod.

[0014] Furthermore, the pressing mechanism includes a plurality of bolts which are respectively rotatably connected to the two sliding rods through threads, and the plurality of bolts are divided into two groups, and the bottoms of the two groups of bolts are rotatably connected to pressing rods.

[0015] Through the above technical solution, the function of the pressing mechanism is to press the workpiece. When the sliding rod is located above the edge of the workpiece, the bolt is turned downward to drive the pressing rod to move downward. The pressing rod contacts and abuts against the top of the workpiece. Through the cooperation of the telescopic rod and the spring, the workpiece on the pressure plate can have the ability to pre-deform. The workpiece is pressed by the pressure rod to further position the workpiece, thereby offsetting the slight deformation of the workpiece during processing.

[0016] Furthermore, the driving mechanism includes a screw rotatably connected to the base, the outside of the screw is rotatably connected to a slider slidably connected to the base, the slider is fixedly connected to the bottom of one of the clamp bodies, and the outward end of the screw is fixedly connected to a handle.

[0017] Through the above technical scheme, the function of the driving mechanism is to drive the two clamp bodies to clamp the workpiece, place the workpiece on the pressure plate and press it down, and drive the sliding rod to move to the top of the edge of the workpiece through mechanical linkage, and then turn the bolt to drive the pressure rod to press the workpiece downward, on the one hand to fix the workpiece, and on the other hand to cooperate with the spring to offset the longitudinal deformation of the workpiece during processing. If you want to further clamp the workpiece, turn the handle to drive the screw to rotate, drive the slider to move, drive the clamp body to move and contact the workpiece, and fix the workpiece through the movable column and the spring. Through the arc-shaped opening on the fixed block, the fixed block can automatically fit the shape of the workpiece and can be quickly positioned.

[0018] Furthermore, the facing mechanism includes two toothed discs rotatably connected to the top of the base, and racks are fixedly connected to both sides of the two clamp bodies, and the plurality of racks are respectively meshed with the two toothed discs.

[0019] Through the above technical scheme, the function of the opposing mechanism is to enable the two clamp bodies to clamp the workpiece inward at the same time. When one clamp body moves inward, it drives the rack to move, drives the gear plate to rotate, drives the other rack to move, drives the other clamp body to move inward, and clamps the workpiece inward at the same time. It is convenient, fast, simple and practical.

[0020] Furthermore, the limiting mechanism includes a plurality of first brackets fixedly connected to the base, each of the plurality of first brackets is fixedly connected to a limiting axis, the bottoms of the two clamp bodies are fixedly connected to a plurality of blocks two, and the plurality of limiting axes are slidably connected to the plurality of blocks two respectively.

[0021] Through the above technical solution, the function of the limiting mechanism is to limit and guide the fixture body. When the fixture body moves, it drives block 2 to move. Block 2 slides on the limiting shaft and limits and guides the fixture body through the limiting shaft.

[0022] The beneficial effects of the present invention are as follows:

[0023] (1) The present invention achieves longitudinal pre-fixation by driving the pressure rod through the bolt on the pressing mechanism, and the driving mechanism rotates the handle to make the screw push the clamp body to move horizontally. The opposing mechanism realizes bilateral synchronous clamping through the gear rack transmission, and the movable column and the fixed block cooperate to adapt to the contour of the workpiece;

[0024] (2) The present invention uses spring 2 to compensate for processing stress laterally, the telescopic rod cooperates with spring 1 to offset longitudinal deformation, and the limit mechanism ensures linear motion of the clamp;

[0025] (3) The present invention uses a spring to reset the pressure plate after processing is completed. Through the coordinated action of multiple mechanisms throughout the entire process, it can not only achieve multi-directional pre-deformation clamping and dynamic deformation compensation of complex-shaped workpieces, but also improve clamping efficiency and processing accuracy through the cooperation of mechanical linkage and elastic elements. It has both practicality and innovation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a first perspective structural diagram of the present invention;

[0027] Figure 2 is a cross-sectional structural diagram of the present invention from a second viewing angle;

[0028] Figure 3 It is a partial enlarged view of point A in the figure;

[0029] Figure 4 is a cross-sectional structural diagram of the present invention from a third viewing angle;

[0030] Figure 5 It is a partial enlarged view of point B in the figure;

[0031] Figure 6It is a partial enlarged view of point C in the figure;

[0032] Figure 7 is a cross-sectional structural diagram of the present invention from a fourth viewing angle;

[0033] Figure 8 This is a partial enlarged view of point D in the figure.

[0034] 1. Base; 2. Clamp body; 3. Movable column; 4. Fixed block; 5. Pressing plate; 6. Telescopic mechanism; 601. Telescopic rod; 602. Spring one; 603. Spring two; 7. Rod two; 8. Linkage mechanism; 801. Rod three; 802. Rod four; 803. Plate two; 804. Support frame; 805. Cylinder two; 806. Axle two; 807. Spring three; 808. Slide rod; 9. Sliding rod; 10. Pressing mechanism; 1001. Bolt; 1002. Pressing rod; 11. Driving mechanism; 1101. Screw; 1102. Sliding block; 1103. Handle; 12. Opposing mechanism; 1201. Toothed disc; 1202. Rack; 13. Limiting mechanism; 1301. First bracket; 1302. Limiting shaft; 1303. Block two. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0036] like Figure 1-Figure 8As shown, a fixing fixture for machining mechanical parts using pre-deformation clamping in this embodiment comprises a base 1 for machining, two fixture bodies 2 for fixing workpieces are installed on the top of the base 1, a plurality of movable columns 3 are slidably connected in the two fixture bodies 2, a plurality of movable columns 3 are rotatably connected at one end thereof facing inward with a fixing block 4, a pressing plate 5 for placing the workpiece is slidably connected at the center of the top of the base 1, the base 1 is used to place the workpiece to be machined, the fixture body 2 is used to fix the workpiece placed on the base 1, when the workpiece is placed on the pressing plate 5, the two fixture bodies 2 clamp the workpiece inward at the same time, and the movable column 3 cooperates with the spring 2 603, the fixing block 4 on the movable column 3 automatically rotates according to the shape of the workpiece, and can fix irregularly shaped workpieces, and through the spring 2 603, the elastic deformation caused by various factors during the machining process can be offset, and the pressing plate 5 and the base 1 are connected. It is connected with a telescopic mechanism 6, which includes a plurality of telescopic rods 601 whose two ends are respectively fixedly connected to the base 1 and the bottom of the pressure plate 5, and a spring 1 602 is sleeved on the outside of the plurality of telescopic rods 601, and the two ends of the spring 1 602 are respectively fixedly connected to the two ends of the telescopic rod 601, and a spring 2 603 is connected between the plurality of movable columns 3 and the clamp body 2, and the two ends of the spring 2 603 are respectively fixedly connected to the movable column 3 and the clamp body 2. The function of the telescopic mechanism 6 is to perform telescoping to offset the elastic deformation, and the elastic deformation in the longitudinal direction is pre-deformed by the cooperation of the telescopic rod 601, the spring 1 602 and the pressure rod 1002, and the elastic deformation in the lateral direction is pre-deformed by the cooperation of the movable column 3 and the spring 2 603. When the workpiece is placed between the two clamp bodies 2, the fixed block 4 on the movable column 3 will automatically rotate and deform according to the shape of the workpiece to adapt to the irregular shape of the workpiece.

[0037] refer to Figure 4-Figure 6The bottom of the pressing plate 5 is rotatably connected to a plurality of rods 2 7, and the other ends of the plurality of rods 2 7 are rotatably connected to a linkage mechanism 8, the linkage mechanism 8 includes a plurality of rods 3 801 rotatably connected to the other ends of the plurality of rods 2 7, the other ends of the plurality of rods 3 801 are rotatably connected to a rod 4 802 through a rotating shaft, and the other ends of the plurality of rods 4 802 are rotatably connected to a plate 2 803, the tops of the two clamp bodies 2 are fixedly connected to a support frame 804, the two plates 2 803 are slidably connected to the two support frames 804, and the two plates 2 8 03 are fixedly connected to two cylinders 805 on the inner side, and multiple cylinders 805 are slidably connected to shafts 806. Multiple shafts 806 are divided into two groups. The inner ends of the two groups of shafts 806 are fixedly connected to the sliding rods 9. The two sliding rods 9 are slidably connected to the two support frames 804. The outer parts of the multiple cylinders 805 are sleeved with springs 807. The two ends of the springs 807 are fixedly connected to the cylinders 805 and the shafts 806 respectively. The top of the base 1 is fixedly connected to multiple slide rods 808. The rods 801 The rotating shaft connected to the rod 4 802 is located in the slide rod 808. The function of the linkage mechanism 8 is to drive the sliding rod 9 to move through mechanical linkage. When the workpiece is to be pre-deformed in the longitudinal direction, the workpiece is first placed on the pressing plate 5, and the pressing plate 5 is pressed downward. The pressing plate 5 moves downward, driving one end of the rod 2 7 to move downward, and the rod 2 7 is deflected and tilted outward as a whole, driving the rod 3 801 to deflect and tilt upward, driving the rod 4 802 to deflect and tilt inward, driving the plate 2 803 to move inward, driving the cylinder 2 805 and the shaft 2 806 Move inward, and the sliding rod 9 is driven by spring three 807 to move inward, so that the sliding rod 9 moves to the top of the workpiece, which is convenient for longitudinal positioning of the workpiece. When the workpiece needs to be taken out, the sliding rod 9 is pulled to move in the direction of plate two 803. At this time, the spring three 807 is compressed, and then the workpiece is taken out. Under the elastic force of spring one 602, the pressure plate 5 automatically resets and waits for the next operation. It is convenient, fast, simple and practical. The sliding groove rod 808 is used to limit and guide the rod three 801 and the rod four 802.

[0038] refer to Figure 4-Figure 6 The tops of the two clamp bodies 2 are slidably connected to two sliding rods 9, and the bottoms of the two sliding rods 9 are rotatably connected to a pressing mechanism 10. The pressing mechanism 10 includes a plurality of bolts 1001 respectively rotatably connected to the two sliding rods 9 through threads. The plurality of bolts 1001 are divided into two groups, and the bottoms of the two groups of bolts 1001 are rotatably connected to a pressing rod 1002. The function of the pressing mechanism 10 is to press the workpiece. When the sliding rod 9 is located above the edge of the workpiece, the bolt 1001 is rotated downward to drive the pressing rod 1002 to move downward. The pressing rod 1002 contacts and resists the top of the workpiece, and cooperates with the telescopic rod 601 and the spring 1 602 to enable the workpiece on the pressure plate 5 to have the ability to pre-deform. The workpiece is pressed by the pressing rod 1002 to further position the workpiece to offset the slight deformation of the workpiece during processing.

[0039] refer to Figure 7-Figure 8 The bottom of one of the clamp bodies 2 is fixedly connected with a driving mechanism 11, and the driving mechanism 11 includes a screw 1101 rotatably connected to the base 1, and the outside of the screw 1101 is rotatably connected with a slider 1102 slidably connected to the base 1, and the slider 1102 is fixedly connected to the bottom of one of the clamp bodies 2, and a handle 1103 is fixedly connected to the outward end of the screw 1101. The function of the driving mechanism 11 is to drive the two clamp bodies 2 to clamp the workpiece, place the workpiece on the pressure plate 5 and press it downward, and drive the sliding rod 9 to move to the upper edge of the workpiece through mechanical linkage. Then, the bolt 1001 is rotated to drive the pressure rod 1002 to press the workpiece downward. On the one hand, the workpiece is fixed, and on the other hand, the pressure rod 1002 cooperates with the spring 1 602 to offset the longitudinal deformation of the workpiece during processing. Then, if you want to further clamp the workpiece, turn the handle 1103 to drive the screw 1101 to rotate, drive the slider 1102 to move, drive the clamp body 2 to move and contact the workpiece, and fix the workpiece through the movable column 3 and the spring 1 602. Through the arc-shaped opening on the fixed block 4, the fixed block 4 can automatically fit the shape of the workpiece and can be quickly positioned.

[0040] refer to Figure 4-Figure 6 A facing mechanism 12 is connected between the two clamp bodies 2, and the facing mechanism 12 includes two toothed discs 1201 rotatably connected to the top of the base 1. Racks 1202 are fixedly connected to both sides of the two clamp bodies 2, and multiple racks 1202 are respectively meshed with the two toothed discs 1201. The function of the facing mechanism 12 is to enable the two clamp bodies 2 to clamp the workpiece inward at the same time. When one clamp body 2 moves inward, it drives the rack 1202 to move, drives the toothed disc 1201 to rotate, drives the other rack 1202 to move, drives the other clamp body 2 to move inward, and drives the workpiece inward at the same time. It is convenient, fast, simple and practical.

[0041] refer to Figure 7-Figure 8 A limiting mechanism 13 is fixedly connected inside the base 1, and the limiting mechanism 13 includes a plurality of first brackets 1301 fixedly connected inside the base 1, and a limiting shaft 1302 is fixedly connected inside each of the plurality of first brackets 1301. A plurality of blocks 1303 are fixedly connected at the bottom of the two clamp bodies 2, and the plurality of limiting shafts 1302 are respectively slidably connected to the plurality of blocks 1303. The function of the limiting mechanism 13 is to limit and guide the clamp body 2. When the clamp body 2 moves, the block 1303 is driven to move, and the block 1303 slides on the limiting shaft 1302, and the clamp body 2 is limited and guided by the limiting shaft 1302.

[0042] The working principle of this embodiment is as follows: the precise fixation and processing deformation compensation of irregular workpieces are achieved through pre-deformation clamping; the workpiece is placed on the pressure plate 5 and then pressed down, and the rod 2 7 rotating at the bottom of the pressure plate 5 drives the rod 3 801 and the rod 4 802 to deflect, so that the plate 2 803 pushes the cylinder 2 805 and the shaft 2 806 to move, and the spring 3 807 pushes the sliding rod 9 to automatically position to the edge of the workpiece; then the bolt 1001 is rotated to drive the pressure rod 1002 to press the workpiece downward to complete the longitudinal pre-fixation, and at the same time, the handle 1103 is rotated to make the screw 1101 push the fixture body 2 to move horizontally, and the toothed disc 1201 and the rack 1202 are rotated. 02 transmission drives the two sides of the clamp body 2 to clamp synchronously, the fixed block 4 at one end of the movable column 3 adapts to the contour of the workpiece through the arc-shaped opening, the spring 2 603 compensates for the processing stress laterally, the telescopic rod 601 and the spring 1 602 cooperate to offset the longitudinal deformation of the pressure plate 5, and the limit shaft 1302 ensures the linear movement of the clamp; after the processing is completed, the bolt 1001 is turned to disengage the pressure rod 1002 from the workpiece, the sliding rod 9 is pulled back, the workpiece is taken out, and then the spring 1 602 resets the pressure plate 5. The whole process is coordinated through mechanical linkage and elastic elements to achieve multi-directional pre-deformation clamping and dynamic deformation compensation of complex-shaped workpieces.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A fixing fixture for machining mechanical parts using pre-deformation clamping, comprising a base (1) for machining, two fixture bodies (2) for fixing workpieces are mounted on the top of the base (1), and the characteristics are: A plurality of movable columns (3) are slidably connected inside the two clamp bodies (2), and a fixed block (4) is rotatably connected to one inward end of each of the movable columns (3). A pressing plate (5) for placing a workpiece is slidably connected at the center of the top of the base (1), and a telescopic mechanism (6) is connected between the pressing plate (5) and the base (1); The bottom of the pressure plate (5) is rotatably connected to a plurality of rods (7), the other ends of the plurality of rods (7) are rotatably connected to a linkage mechanism (8), the tops of the two clamp bodies (2) are slidably connected to two sliding rods (9), the bottoms of the two sliding rods (9) are rotatably connected to a pressing mechanism (10); A driving mechanism (11) is fixedly connected to the bottom of one of the clamp bodies (2), a facing mechanism (12) is connected between the two clamp bodies (2), and a limiting mechanism (13) is fixedly connected inside the base (1).

2. The fixing fixture for machining mechanical parts using pre-deformation clamping according to claim 1 is characterized in that: The telescopic mechanism (6) comprises a plurality of telescopic rods (601) whose two ends are respectively fixedly connected to the base (1) and the bottom of the pressure plate (5); a spring 1 (602) is sleeved on the outside of the plurality of telescopic rods (601); the two ends of the spring 1 (602) are respectively fixedly connected to the two ends of the telescopic rod (601); a spring 2 (603) is connected between the plurality of movable columns (3) and the clamp body (2); the two ends of the spring 2 (603) are respectively fixedly connected to the movable column (3) and the clamp body (2).

3. The fixing fixture for machining mechanical parts using pre-deformation clamping according to claim 1 is characterized in that: The linkage mechanism (8) comprises a plurality of rod threes (801) respectively rotatably connected to the other ends of the plurality of rod twos (7); the other ends of the plurality of rod threes (801) are rotatably connected to rod fours (802) via rotating shafts; the other ends of the plurality of rod fours (802) are rotatably connected to plates twos (803); the tops of the two clamp bodies (2) are fixedly connected to support frames (804); the two plates twos (803) are slidably connected to the two support frames (804); the inner sides of the two plates twos (803) are fixedly connected to two cylinders twos (805); the plurality of cylinders twos (805) are slidably connected to the inner sides of the two plates twos (803); There is a shaft two (806), and multiple shafts two (806) are divided into two groups. The inner ends of the two groups of shafts two (806) are fixedly connected to the sliding rod (9), and the two sliding rods (9) are slidably connected to the two support frames (804). The outsides of multiple cylinders two (805) are sleeved with springs three (807), and the two ends of the springs three (807) are respectively fixedly connected to the cylinder two (805) and the shaft two (806). The top of the base (1) is fixedly connected with multiple sliding groove rods (808), and the rotating shaft connecting the rod three (801) and the rod four (802) is located in the sliding groove rod (808).

4. The fixing fixture for machining mechanical parts using pre-deformation clamping according to claim 1 is characterized in that: The pressing mechanism (10) comprises a plurality of bolts (1001) respectively connected to the two sliding rods (9) by means of threads, wherein the plurality of bolts (1001) are divided into two groups, and the bottoms of the two groups of bolts (1001) are both connected by a pressing rod (1002) by means of threads.

5. The fixing fixture for machining mechanical parts using pre-deformation clamping according to claim 1 is characterized in that: The driving mechanism (11) comprises a screw rod (1101) rotatably connected to the base (1); the outside of the screw rod (1101) is rotatably connected to a slider (1102) slidably connected to the base (1); the slider (1102) is fixedly connected to the bottom of one of the clamp bodies (2); and a handle (1103) is fixedly connected to the outward end of the screw rod (1101).

6. The fixing fixture for machining mechanical parts using pre-deformation clamping according to claim 1 is characterized in that: The facing mechanism (12) comprises two toothed discs (1201) rotatably connected to the top of the base (1), and racks (1202) are fixedly connected to both sides of the two clamp bodies (2), and the plurality of racks (1202) are respectively meshed with the two toothed discs (1201).

7. The fixing fixture for machining mechanical parts using pre-deformation clamping according to claim 1 is characterized in that: The limiting mechanism (13) comprises a plurality of first brackets (1301) fixedly connected to the base (1), and the plurality of first brackets (1301) are each fixedly connected to a limiting axis (1302), and the bottoms of the two clamp bodies (2) are each fixedly connected to a plurality of blocks (1303), and the plurality of limiting axes (1302) are respectively slidably connected to the plurality of blocks (1303).

Images